phister



Jim 21 1927.

A. B. PHISTER v 1 CHEMICAL FIRE EXTINGUISHER Original Filed sptfzs. 1921 3 m 1 I wzmmmr I M a, gym/27250554 @6122? fl kciuued June 21, 19271 5 2-.

' UNITED STATES PATENT m I ALBERT B. PHISTER, OF FORT THO MAS, KENTUCKY, ASSIGNOR TO THE PH ISTER MAN-- UI'ACTUBING COMIANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

CHEMICAL FIRE EXTINGUISHEB...

Original In. 1,666,443, dated November- 8, 1926, Serial No. 502,704, filed September 23, 1821. Application i for rellsue filed February 7, 1927. Serial No. 166,578.

My invention relates to chemical fire-excombination and arrangements of parts, and tinguishers and has for its object, the is0lain the details of construction will hereintion of the working parts from the extinafter he more fully described and claimed. guishing liquid whereby corrosion thereof is In the drawings which illustrate a pre- 5 prevented; further, to avoid leakage of air ferrcd embodimentfrom the air-pressure chamber to the liquid- Fig. 1 is a front elevation of a device havcha'mber; further, to prevent destruction of ing my invention embodied therein; Fig. 2 55 the discharge hose the liquid; and is a side elevation; Fig. 3 is a. rear elevation; further, to provide a more durable and more Fig. 4- is a plan View; Fig. 5 is a central verconveniently operable construction. tical section taken on the line 5-5 of Fig. 4;

Important features of my invention reside Fig. Bis a section of the valve-mechanism in the provision of a chemical fire-extintaken on the line 66 of Fig. 4;; Fig. 7 is a on guisher of ample capacity, yet readily portvertical cross-section taken in a plane correable and convenient to operate, and which sponding to the line 7-7 of Fig. 4; Fig. 8

will be more durable and reliable; further, illustrates a portion of the upper head, the

in the construction and arrangement of the air-di charge valve being shown in horizonseveral chambers for containing the liquid tal section on the -line 88 of Fig. 6; Fig. 55 and compressed air; further, in means to'prc t is a vertical section of the air-valve taken vent filling of the liquid-chamber to a higher on the line. 9-4) of Fig. 6; and. Fig. 10 is a level than required; further, in combinedlylongitudinal section of thedischarge-hose operated fluid and air-valvcs housed in a nozzle taken on the line ill-10 of Fig. 3.

certain relation to other elements of the My invention comprises, in its Referred-7b machine," further, in means whereby the embodiment. an outer liquid-chain or 15 in flexible material of the dischargehose is which the extinguishing liquid is carried, a

7' prevented from coming into contact with pressure-chamber16 arranged concentrically the liquid; further, in means to retain said Within the outer chamber for carrying airhose in, position when not in use; further, pre sure to force the liquid from-chamber 7 in air-ventmeans for draining saiddis- 15, a pump 17 for building up air-pressure charge-hose after use; and further, in means in chamber 16, a shut-off valve 18 in a paswhereby injury to pressure-indicating dcsage 19 between the pump and the chamber vices is prevented. v 16, a combinedly operable valve-mechanism An important object of the invention, in consisting of an air-control valve 20 whereby an addition to those suggested above, is to proair-pressure from chamber 16 is permitted vide an advantageous arrangement of the to enter the chamber 15, and a liquid-control 5 various cooperating elements of a fire-exvalve 21 to permit the extinguishing liquid tinguisher comprising a liquid-chamber, a tohe discharged through a discharge-hose 22 pre sure-chamber, an air-pump, a li uidby pressure admitted from chamber 16 to 35 controlling valve, and an air-contro ling chamber 15.

valve, said valves having common actuating The liquid-chamber 15 is formed between means, such arrangement resulting in a coman outer cylindrical shell 25 and an interpact and highly effective fire-extinguisher mediate shell 26. The pressure-chamber 16 whose parts can be manufactured and asformed between the intermediate shell 26 9c semhlcd with facility, said fire-extinguisher and a pump-cylinder 27 of the pump 17.

being durable and thoroughly reliable in The upper end of the shells 25 and 26 are operation and meeting the exactingrequiresecured in :grooves ,28 of an upper head 29 ments of a device which must not fail in by bodies of solder 30 The leaner ends of emergency.- 7 the shlls and the pump-cylind secured. 06 My invention further consists in the"parts,. in grooves 31 of a lower head 32 by bodies per end of the Air-pressure eflsolder 33. The upper and of the pumpcylinder is,helil, in a hole. 34 in the upper head 29.

chamber 16 by the hand pump 17 comprising a tubular piston rod 36' reciproeally opstable in the cylinder 27 and having a. bearin in a stuffing box 37 in the upper head 29. is stuffing box comprises a cup washer 38 held in place by a nut having threaded connection with the head. Intake open in s40 are located in the upper end of the to ular iston rod. the bore of which forms communication with a piston 41. I a

The piston is formed ashy a dihk 421 cured in the lower end oflho piston rod as by-solrlering-and has :r'lhreaded nipple-41'; projecting thi-i rl'rouifWllich has a heck valve 44 therein so ar anged mi admit air below the piston on the upstrokeonly. A cup washer 45 is confined hctwccnihe speeing collar 46 received about the nipple and a nut 47 having threaded connection therewith.

The annular flange of the cup washer extends upwardly which acts as a check valve as well as a packing for the piston. 'ihe aircompressed in the cylinder below the pis ton on the down stroke is thus enabled to pass into annular space 48 between the piston rod and the pump-cylinder. This construction acls in cll'ect as a two stage pump. A handle Gflis secured .to the upper end oi. the piston rod for conveniently actuating the same.

The passage 19 forms communication between the pressure-chamber 16 and the upjnimp-cylimler. A check valve 5] is located in this passage and is 50 arranged as to permit air from the pump to pass into the prcssurc-chainber but not to pass.therefrom. The check-valve comprises a hall 52 operable in a hall. chamber 53 closed by a screw 54. The shut-off valve 18 is located in the passage 19 between the.

check valve and the entrance to the pressure cha|nbcr. This valve comprises a conieally pointed stem 55 having; threaded connection wilh a threaded here 56 interrupt ing the passage 19. The conical point of the stem enacts with that portion of the passage between lhc bore 56 and the pressure-chamber. 'l'o n'mlie the stem 55 air-tight a packmg 5T is I'WOlVlftl in an enlargement. of the bore 56 and-held therein by a packing nut 58. A handle is secured tothe outer end of lhe stem for manually operating the same.

,The outer chamber is adapted to contain :1 liiii-extinguishing liquid, for instance, carbon tetrachloride. The inner chamber is adapted to carry air under pressure supplied the eto by the pump. This chamber is normally closed from the outer chamber by the air discharge valve 26, and the discharge is built up in the pressure 1. mean hose is normally closed off from the liquidchamhcr by the liquid discharge valve 21. Air pressure from the inner chamber is adapted to he exeiled against the liquid in the outer chamber and in this manner eji-i-l the same lhr-ri-l'row through the r|i:-'(-li:|r; c hose by ronlrolling devices for r-oinl'iinedlv operating valves iz lzinrl 2i. 'lhose controlling devices are so devised that, wh n in case of rmcrgcnov. a lire is to he ".Illll- ;zuishcd. the nil-pressure :ulniillcd from the inner rhuinbrr to the outer chamber is caused to dis harge the extinguishing liquid by manipulating but a singlehandwhr l.

'l'ho vonslrurl'ion herein illuslrali-d and showing a preferred form, omprises a li r ill lheroi u in whi h lhe \'ul\'(* 8; oper- .nbl1-,and nu air-valve body (32 having a valve rhanilirr (iii in which the valve 64 is op rable. l pri-h-r lo form the vaivc-l'iodies ill and (i2 integral with the upper head 2.) as a single casting. and sodispose lhesamc as to have the valve body fill directly over ill! liqnirl-clmn'iber. and the valve body 62 partly over lluliquid-chamber and partly over the air ii-resinrr-chan'ihcr. In the illustration given the valve-bodies preferably are ar ranged in axial alignment with each other. 'ihc air valve 20 comprises a conical end (34 on a slem i5 which is integrally formed with an iinrgrully threaded socket (l6. 'lhv Ffil'lfllj has a flat bottom surface 67 adapted lo Po-act with a bearing surface (38 on the head which causes the stem to have :1 ie riprocul movement in a stulling box 69 in the valvvdmdy 62. A- slanting passage 70 tUlllHlflH the valve-chamber 63 with lhe-li uidwhainber'. axial alignment with the valvcsiem leads from the valve-ehamber and hasconnection hy a slanting passage 72 with the com-' pressedmir chamber 16. The conical end 64 of he stem (35 co-acts with a seat '73 on the wall oi the passage at its entrance to the valve-chamber to either confine the compressed air in the chamber 16 or permit the same to enter the liquid-chamber 15.

'lhe socket (36 has threaded connection 76 for the inner end of a valve shaft 77 carried for both rotary and endwise movement in a stuilint box 78 in the inner end of the valve chamber (31, and a stufling box 79 iii axalosure cap 80 closing the outer end of said valvechumber and having threaded connection 81 therewith. The valve 21 comprises a disk 82 ly larger diameter than the collar 84in order A horizontal passage 7] in ar 84. held in place by-pin 85. The disk 82 Ase-acts ll i a ble screw,

' wheel 925 having will rise in the pi em tied. A

was:

that the liquid may pass when the valye is open. I prefer to face the valve-disk withu comparatively soft non-corrodlble metal, such as a mixture of tin and lead, as shown at 90, in order that times be, perfectly Jrojecting portionof the valve-shaft 1s lygonal in form, as shown at 9], and fur- A hand a bore of like vform is repolygonal-portion of the 1 place by a nut 94 on the the! has a threaded end 92 thereon.

ceived over the shaft and is held threaded end. I il.lle'\'2ilV-Slmft 77, and. the socket 66 with the stem thereon pansible and contractible member. When form a free flouting, ex-

the hand wheel is rotated in one direction, the valves 64 and. 82 are forced to their seats. In this position should the valve-disk cling tightlyto-its seat when the hand whcelis turned. in the other direction the entire contracting action would be confined 'tothe air valve. I therefore provide a stop screw 95 so positioned as to limit the movement of the socket flmwhich causes the same to act as a stationary not for the valve-shaft, disk awn from its seat. In similar manner shou d valve'stick in its seat the valve-shaft will move endwise until the disk 82 strikes the a rotatwhich in turn pulls the air-valve stufiing box 78, after which it acts as from its seat.

In order to the -valve-cham er, a depending liquid eduction pipe 100 hasits upper end soldered in a hole 101 in such manner as to connect with the valve-chamber. This pipe extends very nearly to the bottom of the liquid-chamber. In this manner, when air-pressure is a plied to the top of thefliquid, the li uid e and enter the va vechamber and be iseharged, thereby ena-bling the liquid-chamber to be entirely I o properlf' direct the-estihguishing liquid thelle xib e discharge-hose 22 is attached to the' vulye-chamber by a nipple 102 having threaded connection with the valve-body 60.

, oil, There low,

I pr shcatli 107 .108 of thenipple, whiclrhlls' The nipple' is' of sullicient length to extend through a'hole 103 in the removable valveseut member which holds the sumo in place.

.k'gaske't lll l is received between the nipple and the valvedmdy in order to prevent leakage. I prefer to so construct the hose as to prevent; the extinguishing liquid coming into contact with the rubber portions therea non-corrodiblc flexible inetnllic tubing 106 is consisting of layers of rubber impregnated fabric. ()ne erid ot-the flexible metallietubing is received in a I a groove 109 therein to hold the rubber hose and the nipple ere the valve may at all. tight when closed. The P the pjroperly convey the liquid to inserted inja rubber hose counter bore hose in place.-

. llflgia effectively held together by a clamp ferrule 110. The outer end of the hose has a nozzle lll thereon which com 112 having a reduced shank 113, which has a groove 114 therein to hold the rubber hose in'place. The reduced shanklms a counter bore 115 therein. in which the other end of the-flexible metallic tubing is received. The outer end of the hose is firmly clamped about the reduced shank of the nozzle by a clamp ferrule 116. The nozzleis preferably formed of non-corrodiblc metal, such as lead or tin and therefore does not deteriorate.

Filling means are n'ovided whereby the fluid may be placed in the outer compartment. Thus, a filling mouth 12" is formed in the up )er head which has an opening 121 therein t 1e upper end of which is threaded to receive a closure plug 122 having a polygonal head 123 thereon for conveniently turning the same. The lower end of the opening has a short tube 124 secured therein as by soldering, in order that when the li uid is cured into chamber 15 an air space is formed to allowfor the expansion of the liquid, which expands somewhat with increase of temperature.

between the polygonal head and the upper end of the mouth. cans are provided whereby be drained automatically as been used to extinguish a fire. \Tlms a vent passage 128 in thewall of the mouth communicates with the valve-chamber by means of a hole 129 in the removable seatthe hose may prises a nozzle tip after the device member 87, thus permitting the hoseto automatically drain moved.

indicated at 131, in order that. fire hose may be held whenthe extinguisher'is not in use.

This retainingdevicc comprises an open side socket 132, integrally formed with the upper heed-ash an overmnging hook 133. This hook preferably overhangs the socket in such manner as slightly smaller than the diameter of.the hose. The hose maybe placed in the socket by forcing the same past the overhanging hook, the rubber layers of thehose acting as a resilient body readily'contracting under outside pressure when entirely in the'socket. "the hose is prevented from swinging and flying about and becoming worn when the extinguisher is not in use.

A pressure indicating on the upper head 29 and has tubular eon- The mechanism of these gages. is necessarilv delicate and finely adjusted i .e accidentally broken. I, t-h

To properly protect )5 pressure gage a semicircular hood 1.36 cured to the upper head as by forming and afterwards expanding In this manner I l moreover they. are equipped with glass'frontswhich may when the filler cap is re- .31 gage 135 is mounted nection with the compressed air chamber.

' lugs 13? thereon through which screws 188 pass and are threaded into the upper head.

7 is pourrd into the outer chamber through the mouth 120 after first removing the plug 122. The fluid enters the chamber through the short tube 124 until the level of the liquid rcarhr-s the bottom thereof. An air pocket ll-l is thus f rmed. thm-cby preventing the I (llllllll'XI' from being entirely tilled. We will.

. and flows past the cup washer into the.

assume that the air discharge valve 20 and the liquid discharge valve 21 are closed, the operation and function of which will belater described. The air shut-off valve 18 is opened by turning the handle 59. This opens the passage 18 between the pump 1'? and the compressed air-chamber 16. The operator stands, with his feet on the flange at the bottom thus holding the machine while he operates the pump. The pump is now actuated by the handle 49 which draws in air through the openings 40 into the hollow piston rod of the pump. On the upstroke this air is sucked in and enters the cylinder 27 below the piston '41, through the check valve 44. -On the down stroke the air previously taken in through the check valve and which is now belowthe piston is compressed annular space 48 about the piston rod. On the next upward stroke this partly compressed air is now forced through the passage 19 and past the check valve 51 into the compressed air chamber 16. The pumping action is continued until a proximately one hundred pounds IJTGSSUIGIS built up in the compression chamber. The check valve 51 'prcvcnts pressure from escaping by way of the pump. The shut-off valve 18' is now closed which efli'ectively confines this pressure within the chamber. I

Should itbecome necessaryto employ the extinguisher to put out a fire, the hand wheel 93 is manipulated which combinedly opens valves 20 and 21 by the contracting action of the valve-shaft 77 and threaded socket 66. This permits compressed airfrom the chamber 16 to exert pressure on top of the liquid in the chamber 15, entering by way of passage 70, valve-chamber 63, passage 71, and passage 72. The pressure on the liquid forces the liquid up the stand vpipe 100 mto the valve-chamber 61 and out through the hose'22 and the nozzle 111, the same causing a high velocity to be imparted to the stream of liquid.

After the ,liquid has been exhausted and-1t is necessary to again recharge the device, the, plug 12:2 is removed from the month which permits any liquid that may be retained in the hose to be drained out through the nozzle by breaking the vacuum in the valve-chamlJ('l by uncovering the vent passage 128.

t will be observed that no working parts are normally in contact with the extinguishing liquid, which feature adds long life and dural'iility lothe device. \Vlicn pressure is once pumped no in the 'prcssurechamber there is no chance for the smile to-escapo by leaking through the check-valve or pump, as the passage maybe effectively closed by the shut-off valve 18.

My improved extinguisher is of light weight and sturdy construction, and simple to operate, it only being nccessar to manipulate one handwheel to bring t e device into action. Owing to my im roved construction of cou'ibinedly-operate valves, the device is absolutely certain in its operation, sticking of the valves being entirely avoided. By the'same meansabsolute closing of the valves is assured and vwill at all times remain closed unless the handwheel is manipulated.

Ifrom the descriptioii which has. been given, it will be understood that the liquidchamber, the pressure-chamber, and the air-' pump are in parallel relation and comprise shells confined between upper and lower heads which are common to both chambers; also, that the pump-cylinder, or pump-casing, has its lower end secured to the lower head and its upper end secured to the upperhead, said cylinder communicatin through a charging air-duct in the upper head, with the pressure-chamber; also,'that the pump is centrall located so as togive a. compact and wellalanced machine; also, that the pump-plunger works. through a, central opening in the upper head, .a suitable stufiing-gland bein'g plunger and the upper end of the pump: cylinder; also, that the upper head has therein a service air-duct leadin from the pressure-chamber to the liquid-chamber and a service valve-chamber controlling said duct; also, that the upper head has there in a liquid-outlet duct and a service-valve chamber interposed in the course ofsaid duct and the service-valves controlling the admission of compressed air to the liquid-chamber and the outlet of liquidffroin provided between the. y

nection between said needle-valve and said tions,

' opened.

, construction and arr-an ement-of elements -may be made without invention.

foregoingdctailed description, based upon -a preferred embodiment has been given to facilitate annnderstanding of the inven tion, but without intent to limit the invention unnecessarily, it being my intent to claim the invention as broadly as permissible, in view of the prior art.

lVhat I-claim as new, and desire to secure by Letters Patent, j

1. In a fire-extinguisher, a liquid-chamber adapted to be supplied with liquid, an airhambegmeans for charging said air-cha.1nher with compressed gas, a needle-valve for controllin the passage of'compressed gas from said air-chamher into said liquidchamber whereby said liquid is forced there fromQand means operatively connected with said needle-valve 'to control the discharge of liquid from said liquid-chamber, coimnon operating means for said needle-valve 21m said liquid control. means, the operative conliquid control means being so constructed that upon actuation of said common operating means said needle-valve and liquid control means are moved .in opposite direc- 2.111 a tire-extinguisher, a liquid-chamber, adapted to carry a fire-extinguishing liquid,'fanj air pressure chamber, a pumping means for charging said air-chamber, a pair of spaced apart and disconnect tj valves aced apart valves ii chambers, 21 pair of y actuatahle in opmanuallyaand combine posite directions in said valve-chambers, re-

spcctiveiy, one of said valves controllin the discharge 'of liquid from said liquid-c iambciyiand the other of said valves permitting air-pressure from said air-chamber to enter said Iiquirkchamlier to cause theliquid to be expelled therefrom,

3. In a fire-extinguisher, a liquid-chamber, an ainchamber, a pumping means for build ing'up pressur'e-insaid air-chamber, a diskvalvehaving tubular connect-ion with the lower end of said liquid charnber, a directive discharge means having tubular connection with said valve, a needle valve having tuhular connection with said air-chamher said liquid-chamber, a mechanical connection between said disk-valve and said needle-valve capableiof expansion and contraction for causing movement of said valves in opposite direction from and towardeach other, and manual actuating means attached to said mechanical connection whereby said valves are con'ihinedly closed and combinedly 4. In a fire-extinguisher a liquid-chamber, an aiiwhamber, pumping'means tobulld up air-pressure in said air-chamber, a valveepartni'e: from 'my body mounted partly over said liquid-chamher and partly over said air-chamber and v A rhaving a'valvewhamber therein, a passage.

It ls'to be understood, therefore that the connecting said air-chamber and said valve chamber, a second passage connecting said valve-chaxnher and said liguid-chamber, a

stem movable endwise having a conical end thereon adapted to co-act with one of said passages to form an air-valve, a second valve-body mounted over said liquid-charm.

her having a valve-chamber therein, a tube connecting said last named valve-chamber with the lower art of said liquid-chamher, a valvesha mounted for reciprocal and rotary movement in said last named valve-chamber, a valve-disk carried on said valve-shaft Within said last named valve chamber, a valve-neat in said last named valve-cl1amber to co-act with said valvedisk to form a liquid-valve, said valve-shaft having screw connection with. said valvevalvewhambar and said liquid-chem r, a-

stem movable endwisehaving a conical end thereon adapted to co-act with one of said passages to form an air-valve, a second valve-hody mounted over said liquid-chamher having a valve-chamber therein, a tube connecting said last named. valve-chamber ,7

with the lower part'ofsaid liquid-chamber. a valve-shaft "mounted for reciprocal and ota'rv movement in said last named valve chamber, evolve-disk loosely carried on said valveshaft within said last named valvechamber,- a valve-seat in said last named chamber to co-act with said valve-disk to form a liquid-valve, said valve-shaft having screw connection With said valve-stem, and

manual actuating means on said valve-shaft I whereby said screw connection is operated either to cause said valves to approach each other to withdraw from the r seats or recede from each" other to contact their seats.

- 6. In a fire-extinguisher, a liqxiid-chambetg;

an air ghalnher, pumping means ior forcin'g air into said air-chamber fan. air-valve adapted to control the passage of air from said air-chamber to said li'qixid-chamberand comprising a valve-body, a valve-chamber therein, passages connectln respectively with said air-chamber and-sald valve-cham-'.

her, and said liquidachambervalvechamber, a valve-seat in one of said pasa comically pointed stem movable endwise and adapted to co-act with said seat, a threaded socket integrally formed with ,Said stem, means to hold said socket and stem against rotary motion, limiting means to'eontrolthe movement of said socket and stem, at liquid-valve having tubular connection with the -lower end o'l' said liquid chamber, a discharge-hose secured to said valve and having tubular connection therewith, said valve comprising a valve-body, a removable seat therein, a valve-shaft mounted for combined rotary and endwise movement in said valve-body and passing therethrough, a valve-disk mounted on said valveshaft, a non-corrosive soft metal facing on said disk adapted to contact said removable seat, means to hold said removable seat in place, said valve-shaft having a threaded extension adapted t0- co-act with said threaded socket to cause said valvedisk and-said conically pointed. valve-stem to approach each other an open said valves, or to recede from each other to forcibly close said valves, and a hand wheelsecured on said valve-shaft whereby said valves are combinedly opened'and comhinedly closed.

7, In a fire-extinguisher, an upper head having an annular groove therein adjacent its peripher a second annular roove therein located within said first named groove, and a hole therein located within said second named groove, a lower head having an outer annular groove therein adjacent its peripli ery, an intermediate annular groove [herein located'within said outer groove, and an inner groove located within said intermediate groove, a cylindrical shell whose upper end is received in said first named groove of said upper'h ad and whose lower end is received in said outer groove of said lower head, a second cylindrical shell whose upper-end is received in said second named groove of said upper head and'whose lower end is received in said intermediate groove of said lower head; a third cylindrical shell whose upper end is received in said hole in said upper hearl, and whose lower (-ud is received in said inner groove in said lower head, the association of said shellsand heads forming in the order named res iectivel v, a liquid-chainher, an air-clnimln-r and a pump cylinder arranged within each other. a pumping: means in said pump cylinder whereby air-pre :ure is built up in said airchamber, means to convey liquid from the bottom of said liquid-chamber, a dischargehose, a liquid-Valve between said liquid conveying means and said hose, an air-passage between said air-chamber and said liquidchamber, an air-valve in said passage, a mechanical connection between said air-valve and said liquid-valve capable of expansion and contraction and manual. actuating means operatively connected with said mechanical connection whereby said'valves are opened and closed in opposite directions, a passage between said pump cylinder and said aircl'ian'iher, a check-valve in said passage, and a manually actuatable valve in said passage between said check-valve and said air-chum her, whereby said air-chamber may be closed.

from said pump. Y

8. In a fire-extinguisher, an upper head having an annular groove therein, adjacent its )criphery, a second annular groove therein -ocated concentrically within said, first named groove, and a hole therein heated concentrically within said second named groove, a lower head having an outer annular groove therein adjacent its periphery, an intermediate annular groove rtherein located concentrically within said outer groove, and an inner; groove located. concentrically within said lntermediate 001e, a cylindrical shell whose upper en is received in said first named 'groove-of-said upper head and whose lower end is. received in said outer groove'oi said lower head, a. second cylindrical shell whose upper end is received in said second named groove of said upperhead and whose lower end is received in said intermediate groove of said lower head, a third cylindrical shell whose upper end is received in said hole in said upper head, and whose lower end is received in said inner groovein said lower head, the association of said shells and heads formm in the order named respectively, a liquid-c iamber,

an air-chamber and a pump cylinder arranged concentrically within each other, a pumping means in said pump cylinder whereby air-pressure is built up in said airchamber, means to convey liquid from the bottom of said liquid-chamber, a dischargehose, :1 liquid-valve between said liquid con'-' veying means and said hos-cyan air-passa a between said ail-chamber and said liqui chaniloer, an air-valve in said passage, 8.

mechanical connection between said airvalve and said liquid-valve capable of ex pansion and contraction and manual aetuating means operatively connected with said mechanical connection whereby said valves are openedand closed in oppositedirections, a passage between said pump cylinder and said alr-chambrr, ZLL'lleCk-VfllVG in said pass sage,.and a manually actuatable valve in said passage hrtwccn said check-valve and said 9 air-chamber. whereby said airehamber may be closed from said pump.

5), In a fire-extinguisher, a liquid-chamber, an air-prcssure chamber, and a pump cylinder, arranged about each other in the order named. formed by an association of parts con'iy'n'ising a cylindrical shell a sec- 0nd cylindrical shell arranged within said first nan'ied shell, a third cylindrical shell arranged within said second naiiitlslieli, an

upper head having a hole therein in which glowen'head, a

head having a pluralityof annular grooves therein in which the lower ends of said shells are re -vcd a pumping means in said third named shell for buildin up air-pressure in said air-chamber, a disc argc-hose, a liquiddischarge valve having tubular connection with said discharge-hose and the lower end of said liquid-chamber, an air 'valve having tubular connection with said air-chamber 5 and said liquid-chamber, a manually operable mechanical connection between said liquid-valve andlsaid air-valve so devised as to cause movement of said valves in opposed directions to cornhinedly open or close said 2 valves, 11 filling mouth on said upper head over said liquid-chamber, a removable closure plug in said filling mouth, and a ventpassage in said mouth having tubular connections with said li aid-valve and said discharge-hose, adapte to be closed by said closure plug when inserted in said. mouth and ada ted to be opened to break a vacuum in said liquid-valve and allow said hose to drain when said 'closure from said mouth.-

10. In a fire-extinguisher, a liquid-chamber, adapted to carry a fire-extin uishin liquid, an air-chamber arranged wit lll'l sai li uid-chamhciga pumping means arranged within said ai!'chamber, a liquid-valve to control-the discharge of liquidv from said liquid-chamber, an air-valve to permit pressure from said air-chamber to enter said liquid-chamber, means to combinedly operplug is removed 40 ate said valves in opposite axial directions, a

l'illin mouth on said liquid-chamber a remova le closure plug therein, a tubu r extension 'de' ending jrom said filling mouth into said l pocket is formed over the liquid.

11. In a fire-extinguisher, a liquid-chamber, an air-chamber, a. pumpin means to build up pressure in said air-c amber, an

I air-valve tubular-1y connected with said air chamber and said liquid-chamber, a discharge'hose, a liquid-valve tubularly eon- .hected with said discharge-hose and said liquid-chamber, manual operating means to combinedly actuate said valves in opposite directions, a pressure-indicatinq1 gag: tublg am r, an

lnrly connected with said aira protecting hood mounted on said chambe: over said indicating gage so devised as to unit the indicating face ofsaid indi- Q catmg gage to be visible.

12. 1111; lire-extinguisher, a liquid-cham bcr, a'n air-chamber, and a name said chambers formed by an associa- 'ing ribs between which the respective ends said hose comprising an open si a surrounding said metallic tubing, a dis iquillazhainher, whereby an air' named pump cylinder varranged"within each other. in the order plurality of cylindrical shells, Nichol said s iells being of a diameter different than the remaining shells, each ofisaid headshaving a purality oi. annular upstand- I of said shells are secured, an air-valve t-ubu- .larly connected with said air-chamber, and said liquid-chamber, a discharge-hose, s

liquid-valve. tubular-1y connected with said disc ar e-hose and said liquid-chamber, manna y operable means mechanically con- 'necting said valves and so arranged as to open and close said valves by movements in opposite directions, and retainin means for (lit socket in-v tegrally formed with said upper head, the entrance thereto beii'ig smaller than the diameter thereof. I

13. In a fire-extinguisher, a liquid-chamlicr, an air-chamber, a pumping means for I; chargin 1 said air-chamber, an air-valvc tuhulariTv connected with said air-chamber and said liquid-chamber, a liquid-valve tuhir lull f; connected with the lower end of said liquid-chamber, a manually 0 enable mcchanical connection between sai valves and whereby said valves are actuated in opposite directions, a discharge-hose com rising flex ible metallic tubing, and a ru ber sheath charge nozzle, a reduced extension thereon having a countcrhore therein in which one cud of said metallic tubing is received, a nipple having threaded connection with said liquid-valve, a reduced extension on said nipple having acounterbore therein in which 7 the other end of said metallic tubing is received, said extensions of said *nipple and said'nozzle having annular grooves therein,

and clamping ferrules receivedabout the 1- ends of said hose' to compel the nmterial of said sheath to beforced into said grooves whcrcb saidnipple and nozzle are firmly- .s ccure to said hose. U

1,4..In a fire-extinguisher, an outer cylirr" drical shell, an intermediate cvlindricalshell, and an inner cylindrical shel arranged conmmtrically within each other inthe order named, an upper head having anannular groove therein adjacent its periphery in which the upper end 'of said outer shell is received,"a second annular groove therein arra ged concentrically. within said first named K groove in which the upper end of said intermediate shell is received, and a hole therein located concentrically .with said. previously grooves in which the upper end of said inner shell is received, a lower head having a plurality of concentric grooves in which the lower ends of said shells are rcceived, the association of shells and heads forming a liquid-chamber, an air-chamber and a pump cylinder arrangedconcentrically within each other in the order named, a

p'umping meana in-said pump cylirfder, a

formed with said head, a closure plug in said mouth, a vent-passage in said mouth to liquid-valve comprising; a valve bddyin- 'tegrally formed with said upper head, a-

disk-valve operable therein, a discharge-hose havin tubular connection with said liquid valve Ody, a stand pipe forming connection between said li uid valve body and the lower end of said l1quid-chamber, an air valve body integrally formed with. said upper head and having a valve-chamber therein tubularly'connected with said air-chamber and said liquid-chamber, a needle-valve operable in said last named valve-chamber, a valve-shaft mounted for reciprocal and rotary movement in said liquid valve'chamher, a valve-disk on said valve-shaft within said liquid valve-chamber, a screw connection between said ,needle-VaIVe and said valve-shaft, whereby said valves are caused to open when approaching eachother and caused to close when receding from each other, manual 0 Lerating means i on said valve-shaft, a Hing mouth integrally cause drainage of said hose when said plug is removed, a tube extending downwardly from said filling mouth into said liquid chamber whereby an air-pocket is' formed above the liquid, hose-retaining: means integral ly formed with said head wherein said hose is carried when not in usc.-a passage in said upper head between said pumping means and said air-chamber. a ch ck-valve in said passage, and a needle-valve in said passage between said cheek-ralre-and said air-chamber. I

15. In afire-extinguisher, a liquid-chamber, a pressiire-chan'iber, a common head for said chai'nbers, means comprising a servicevalre housed in said head for controlling the discharge of liquid from said liquid-chamber, means mmprising a second servicevalve housed in said head, for controlling the passage of pressure from said pressurechamber to said liquid-chamber, and common actuating means for said service-valves.

16. In a lire--cxtinguishcr, a liquid-chamber, a pressure-chambcr, and an air-pump in parallel relation, a head common to said hambers through which the pLunp-phmger works, said head being provided with a charging air-duct through which air may pass from pump to Iii-CS5!II'Q- ZlHiIIIlJPI', with a siarrice air-duct from p1assure-chamber to liquid-chamber, and with a. liquid-outlet duct, a conduit leading from the lower 'por .tion of the liquid-chamber to said liquidoutlet duct, service-valves housed in said head and controlling: said second-mentioned air-duct and said liquid-outlet"tluct, respectively. and common actuating means for said service-valves.

17. In a fire-extinguisl'ier, aliquid-chamher, a pressure-chamber, and a centrally lo cated air-pump in parallel relation, a read common to said chambers through which the pump-plunger works, said head being provided with a charging air-duct through which air may pass from pump to pressurechamber, with a service air-duct from pressure-chamber to liquid-chan'iber, and with a liquid-outlet duct, a conduit leading from the lower portion of the liquid-chamber to said liquid-outlet duct, service-valves housed lltll lltl -Yttldti chamber and air-ducts leading to the pressure-chamber and from the pressure-chamber to said air-valve chamber and thence to the li uill-chamber, an eductionpipe extending from the lower portion'of said liquid-chamber and communicating with said lhpiid-ralrc chamber, a liquid-outlet passage from said liquid-valve chamber,

service-valves in said valve-chambers, and

common actuating means for said service- \'al\es.

lit in a lire-extinguisher, a liquid-chamber, a pressure-chamber, and a centrally loated airunzip in parallel relation, a common upper head for said chambers supporting the upper end of theplunp-casing, a pmiipph-mgerworking through the upper end of the pump-casing, a charging air-duct in said head through which air may pass to the pressure-chamber, a service air-duct in said head through which pressure may pass' from the pressure-cl'iambcr to the liquidchaniber, a liquid-outlet duct in said head and an eduction pipe leading thereto from the lower portion of the liquid-chamber, service-valves housed in said head and guarding the air-duct leading to the liquidchamber and the liquid-outlet duct common actuating means for said service-valves, and a manually operated shutoll' valve mounted in said head and serving to securely close said cl'iarging air-duct after the pressurechamber hasbcen charged.

20. In a lire-extinguishc'r, a lower head, an upper head provided centrally with an opening, three shells interposed between and secured to said heads and forming a liquidchamber, a pressure-chamber, and a pumpcusing, the upper end of said pump-casing being received in said central opening, a pump-plunger working through the upper end of said pump-casing and having a handle disposed normally above said upper head, a c

arging air-duct in said upper head commumcating with the pumps pd last-mentione per head.

with the pressure-chamber, a shut-off valve housed in said head and adapted to securely close said ductafter the pressure-chamber has been charged, a service air-duct in said upper head for establishing communication between the pressure chamber and liquid-chamber, a service liquid-duct through said upper head, a hose mounted on said upper head and communicating with said last-mentioned duct, a liquid-eduction pipe depending from said upper head to the lower portion of said liquid-chamber and :at its upper end with said duct, and service valvemechanism mounted on said upper head and controlling said service-ducts, said valvemechanism having a single actuating means controlling both said service-ducts.

21. In a fire-extinguisher, a lower head, an upper head having therethrough a central openingand having therein a charging airduct and communicating valve-chamber, a service air-duct and communicating valvecommunica tin f chamber, and a liquid-outlet duct and communicating valve-chamber, a manual valve in said first-mentioned valve-chamber for securely closing the charging air-duct, valves in the second-mentioned and third-mentioned Valve-chambers controlling, respectively, the service air-duct and the liquid-outlet duct, common actuating means for said last-mentioned valves, three shells-interposed between and secured to said heads and forming therewith aliquid-chamber, a pressure-chamber, and a pump-casing, the upper end of the latter extending into said central opening and equipped with a stuffing-gland, a pumpplunger working through said stuffing-gland,

and having a handle disposed over said upper head, said charging air-duct serving in conducting air from the pump to the pumpcasing and said service air-duct serving in conducting air from the pump-casing to the liquid-chamber, and a pipe dependin from said upper head and affording a liqui -.out.let conduit from the'lower portion of the li uidchamber totheliquid-outlet duct in sai up- 22. In a fire-extinguisher a lower head, an upper head having therethrough a pumpopening and having therein a charging airduct, a service air-duct, and a service liquidduct, said up er head having also therein service-valve c ambers intersecting the serv ice ducts, service-valves housed in said valvechambers, common actuating means for said service-valves, a hose mounted on said upr head and communicating with the service iquid-duct, a liquid-eduction pipe depending from said upper head and oommunicatin with the service liquid-duct, shells inter-p0 between and secured to said heads and 0mm ing therewith a pressure-chamber and a liquid-chamber, a pain -casing de ding from the opening in an upper h and a the pump-plunger working through the upper end of said pump-casing and equipped with a handle overlying said upper head, the pump-casing communicating with said charging air-duet, the service air-duct providing communication between said pressure-' chamber and liquid-chamber, and the liquideduction pipe depending into said liquidchamber to the lower portion thereof.

23. In a fire-extinguisher, a lower head 7 and an upper head providedwith shellreceiving flanges, shells interposed between said heads and forming a pressure-chamber and a liquidchamber, a pum de ending from said upper head and equippe with a plunger working through said upper head, said upper head having a charging air-duct therein communicating with the pump'rand pressure-chambcr, a service air-duct through said upper head fronrthe pressure-chamber to the liquid-chamber, a service liquid-duct through said upper head communicating with a conduit leading from the lower portion of the liquid-chamber-, and a servicevalve mechanism provided with valve means mounted, in said upper head and oooperatively controlling both said service ducts.

24. In a fire-extinguisher, a lower head, an upper head, and interposed shells forming a pressure-chamber and a liquid-chamber, the upper head being equipped with means for charging the liquid-chamber and being provided with a service air-duct and a service' liquid-duet, mrvice-valves housed in said upper head and controlling the service ducts,

common actuatingmeans for said servicev-iilvcs, a conduit leading from the lower portion of the liquid-chamber to the service liquid-duct, an air-pump depending from said upper head and having a plunger work- 5 ing 'therethrough, said upper head having a charging air-duct, communicating with said pump and with said pressure-chamber, and a shut-otf valve housed in said upper head and controlling said charging airduct,

said shut-off valve having an adjusting stem e nipped with actuating means disposed a )ove said upper head.

25. In a fire-extinguisher, a lower head,

an ,upper head, and interposed shells form-.

ing' a pressure-chamber'and a liquid-chainber, ,the upper head beingequipped with means for'charging the liquid-chamber and being provided with a service air-duct and a service liquid-duct, service-valves housed in said upper head and controlling the service ducts, common actuating means for said service-valves, a conduit leading from the lower portion of the liquid-chamber to the service liquid-duct, an air-pump depending i25 from said upper head and having a plunger working therethrou h, said upper head havin a charging airuct communicating with said pump and with-said pressure-chamber,

a shut-off valve housed in said upper-head duct through which air may pass from pump bot, e'preasure-cham to pressure-chamber, with a service air-duct from pressure-chamber to liquid-chamber, end with a liquid-outlet duct, a conduit leading' from the lower rtion ofthe liquidchamber to .said liquid-outlet duet, servicevalves housed in said head and controllin said second-mentioned air-"duct and sai liquid-outlet duct, respectively, and common actuating means for said service-valves.

27. In a. fireextinfiiiqher, a liquid-chamr, a common head for duct from pressure-c liquid-bham her, a. pressuremham r, and an air-pump in therein a servirae :liramher'to liquid-chamber'and e, service-liquid-duct serving as an outlet from said liquid-chamber, a valveshaft mounted in said head and equip )ed with an operating handle and se'rvice-vaives ducts, said servicesaid chambers having guarding said service valves being opratively connected with-saidvalve-shaft and shift'ahly related to each other.

28. In a fire-extinguisher, 2L liquid-chamher, a presume-chamber, a. common head for said chambers. having therein a service airduct from pressure-chamber to liquid-chamher and a serviceliqnid-duct serving as an 1 outlet fro n'said liquid-cluimber, a valveshaft 'ournalled in said head, co-axisl service-Va ves guarding said service ducts and havin connections with said valve-shaft for e cting relative longitudinal shifting of said service-valves, and an operating wheel on said shaft.

ALBERT B.Y1 HISTEVR. 

